What is the pattern in the differences of the x's and the differences of the y's?

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.